Bolster-spring



(No Model.)

"0. W. PHELPS.-

BOLSTER- SPRING.

Patented Feb. 13, 1894.

gggnfarx .g hk 44277077263! Mir/eases UNITED STATES ATENT OFFICE.

CHARLES W. PHELPS, OF RAGINE, WISCONSIN.

BOLSTER-SPRlNG.

SPECIFICATION forming part of Letters Patent No. 514,728, dated February 13, 1894.

Application filed August 11, 1893. Serial No. 482,905. (No model.)

To all whom it may concern:

Be it known that I, CHARLES W. PHELPS, a c tizen of the United States, residi'ng at Raclne, county of Racine, State of Wisconsin, have invented a certain new and useful Improvement in Bolster-Springs; and I declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it pertains to make and use the same, reference being had to the accompanying'drawings, which form a part of this specification.

My invention relates to new and useful improvements in bolster springs, and consists in the matters hereinafter described and pointed out in the appended claims.

In the accompanying drawings illustrating my invention, Figure 1 is an inverted plan view of my improved device. Fig. 2 is a side elevation of the same. Fig. 3 is a transverse sectional view, taken on line 3-3 of Fig. 2.

Referring by letter to said drawings, A designates the bolster of a vehicle.

B B designate two wooden clamping bars or cleats which are connected together by suitable metal yokes or straps, O O, which are secured to said bars or cleats by means of bolts'D D. A space is left between the cleats for the admission of the bolster A. Each of the straps O terminates, at its opposite ends, in flanges a, and through a hole in each of said flanges is passed a suitable bolt or screw b, upon which is threaded a nut e, which is arranged to engage with the inner face of the flange a, in the manner shown more particularly in Figs. 1 and 3.

The points of the bolts 1) b are designed to engage against the outer faces of the cleats or clamping bars B B, or interposed metallic reinforcing plates (1 d which may be arranged upon the outside of said cleats to take the thrust of the bolts. By this construction, the clamping bars or cleats may be adjusted upon opposite sides of the bolster and crowded or forced into firm engagement therewith by means of the bolts b b.

Secured to the upper side of each of the cleats B B, and conveniently above the yokes G G, are suitable leaf springs E E, said springs being secured in position by means of the bolts D D and bolts D D, which latter are passed directly through the springs and the cleats B B. The upper or outer ends of the springsE E are curled or turned over and engaged with transverse rods F F which are suspended from the pillow block G, by means of bracketsfff, which are bolted to the under side of said pillow block.

H H designate supplementary springs which are of substantially the same shape as the springs E E, and secured at their inner ends to the pillow block G, by bolts g g,,while their outer ends are left free, and hang in a position to impinge against the upper side of the bolster, onlywhen the load upon the pillowblock is heavy enough to overcome the resistance of the springs E E. V

The springs H H may be made separately as shown in the drawings, as may also the springs E E, or if preferred, each pair of said springs may be made from a single leaf, as indicated by the dotted lines in Fig. 2. a

Ifpreferred, a cushionK may be interposed between the inner ends of the springs E E, or said inner ends may be arranged to overhang from the yokes C C, in an obvious manner. By this construction, the springs E E may be adjusted according to the load which is designed to be carried, by slightly loosening the bolts D D and tightening thebolts D D so as to throw the outer ends of said springs E E upward away from the bolster A.

My device may be applied to any ordinary bolster, by simply adjusting the clamping bars or cleats upon the outside of the bolster, and then adjusting the bolts b b so as to firmly crowd said cleats against the sides of the bolster.

Instead of the springs H H, any other desired form of auxiliary springs might be employed, without departing from my original invention.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent of the United States, is

' 1. The combination with a pair of cleats and suitable yokes connecting them, so as to leave a space between them for the admission of a vehicle bolster, of suitable means for clamping said cleats to the sides of the bolster,

springs carried by said cleats, and a pillow block carried by and supported upon said springs, substantially as described.

2. The combination with a pair of cleats and flanged straps connecting them so as to leave a space between them fora vehicle bolster of screw bolts passed through the flanges of said straps, and their binding nuts, springs carried by said cleats, and a pillow block connected with and supported by said springs, substantially as described.

3. The combination with a pair of cleats and flanged straps connecting them so as to leave a space between them for a vehicle bolster, of screw bolts passed through the flanges of said straps, springs carried by said cleats, a pillow block connected with and supported by said springs, and suitable means for adjusting said springs so as to var the height of said pillow block above the level of the cleats, substantially as described.

4. The combination with a pair of clampin g bars or cleats connected together by yokes, and adapted for engagement with a bolster, springs carried by said cleats, and a pillow block supported upon said springs, of suitable auxiliary springs secured to the under side of said pillow block, and adapted for engagement with the upper side of the bolster, substantially as described.

In testimony whereof I sign this specification in the presence of two witnesses.

CHARLES W. PHELPS.

\Vitnesses:

JOHN E. WILEs, E. W. STOUT. 

